Process for purifying water that contains organic matter专利检索-曝气池水处理专利检索查询-专利查询网

Process for purifying water that contains organic matter

阅读：715发布：2023-04-11

专利汇可以提供Process for purifying water that contains organic matter专利检索，专利查询，专利分析的服务。并且A process for purifying water that contains organic matter which comprises mixing a coagulant consisting of either a ferric salt alone or a ferrous salt and an oxidant into sewage that contains organic matter in a high concentration, causing the coagulantcontaining sewage to flow into a flocculating region, agitating the sewage for floc formation and growth, separating the floc in a sedimentation region into effluent and sludge, thus obtaining as the supernatant a sewage that contains organic matter in a low concentration, introducing said sewage into an aeration tank in which iron floc is formed, allowing microorganisms to be adsorbed on the iron floc while the sewage is being aerated in said tank, thereby to obtain highly pure treated water.，下面是Process for purifying water that contains organic matter专利的具体信息内容。

权利要求

2. A process for purifying water according to claim 1 wherein the sewage containing organic matter in a low concentration is aerated with ferrous ions present therein, so that the iron floc can be formed.

3. A process for purifying water according to claim 1 wherein the sludge separated out by flocculation is recycled to the flocculating region.

4. A process for purifying water according to claim 1 wherein the ferric salt is a salt selected from the group consisting of ferric chloride and ferric sulfate.

5. A process for purifying water according to claim 1 wherein the ferrous salt is a salt selected from the group consisting of ferrous sulfate and ferrous chloride, and the oxidant is one selected from the group consisting of hydrogen peroxide and chlorine.

6. A water purification process for removal of organic matter from sewage comprising, establishing a pool of water to be purified, said water containing a high concentration of organic matter; adding a coagulant consisting of a ferric salt selected from the group consisting of ferric chloride and ferric sulfate; introducing the coagulant-containing sewage into a flocculating region; agitating the sewage for floc formation and growth; separating the sewage in a sedimentation region into effluent and sludge; said sludge being separated out by flocculation being recycled to the flocculating region; obtaining a resulting sewage containing organic matter in a low concentration, introducing said low concentration sewage into an aeration tank having ferrous ions present therein; iron floc being formed in said tank; and allowing micro-organisms to be adsorbed on the iron floc while the sewage is being aerated in said tank.

7. A water purification process as claimed in claim 6, further comprising the steps of: adjusting the pH on the alkaline side at least to 11.5, and combining the ferric salt with an oxidant selected from the group consisting of hydrogen peroxide, chloride and sodium hypochlorite.

8. A water purifying process as claimed in Claim 1, further comprising the steps of: introducing the sewage into an aeration tank in which iron floc is formed while the sewage is being aerated the microorganisms present is adsorbed; introducing water that contains organic matter in a low concentration into the tank, agitating and mixing the floc and water under aerobic conditions; allowing the microorganisms to be adsorbed on the iron-based floc, and separating the water in the sedimentation region into clear treated water and floc layers.

9. A water purifying process as claimed in claim 1, further including the step of using a synthetic substrate of 3 parts of glucose and one part of peptone to clarify the properties of the microorganisms adsorbed on the iron floc.

10. A water purifying process as claimed in claim 1, further comprising the step of using coagulants, selected from the group consisting of aluminum sulfate and lime in the flocculation of the first stage.

11. A water purifying process as claimed in claim 1, further comprising the step of adding ferroUs ions to the coagulant containing sewage.

12. A water purifying process as claimed in claim 1, said step of introducing said sewage into an aeration tank, comprising the steps of introducing it in sequence into three tanks connected in parallel, permitting the sludge to settle in each tank and ducting the remaining flow from each tank back into the first aerating tank; continuously adding ferrous sulfate to the flocculated water in the first tank to maintain a Fe ion content of 10 p.p.m; suspending floc of ferric hydroxide in the second tank and passing the flocculated water therethrough, and introducing untreated sewage into the third tank and treating it with activated sludge.

13. A water purifying process as claimed in claim 12, further comprising the step of adding to the untreated sewage in the third tank ferrous sulfate to maintain a Fe ion content of 40 p.p.m. and hydrogen peroxide to a concentration of 10 p.p.m.

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Process for purifying water that contains organic matter

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